15-piece metal drill bit set ProBox HSS-Co 1-13mm Bosch 2608587018

The set consists of 25 HSS-Co metal drills with diameters:

• 1.0 mm working length 12 mm (max. 4,500 rpm)
• 2.0 mm working length 24mm (max. 4,500 rpm)
• 2.5 mm working length 30mm (max. 3,000 rpm)
• 3.0 mm working length 33mm (max. 3,000 rpm)
• 3.5 mm working length 39mm (max.3,000 rpm)
• 4.5 mm working length 47mm (max.2,000 rpm)
• 5.0 mm working length 52mm (max.2,000 rpm)
• 6.5 mm working length 63mm (max. 1,500 rpm)
• 7.0 mm working length 69mm (max. 1,500 rpm)
• 8.0 mm working length 75mm (max. 1,500 rpm)
• 9.0 mm working length 81mm (max. 1,000 rpm)
• 9.5 mm working length 81mm (max. 1,000 rpm)
• 11.0 mm working length 94mm (max. 900 rpm)
• 12.0 mm working length 101mm (max. 900 rpm)
• 12.5 mm working length 101mm (max. 900 rpm)

HSS-Co drills are made according to DIN 338 from HSS-E (SK5 M) high-speed steel with the addition of 5% cobalt. As a result, they are characterized by increased cutting efficiency and greater temperature resistance.

Narrow tolerances in the grinding of the blades ensure that holes are made with the highest precision. The self-centering properties of the drill, thanks to the cross-ground blade, make prior centering unnecessary when drilling holes up to 10 mm in diameter.